Across
- 1. Stuff,takes up space
- 6. Lower energy
- 7. Substances converted
- 8. Temperature to rise
- 11. A pure substance
- 13. Present at the end
- 14. Measure of matter
- 15. Average kinetic energy
- 17. Nonmetal atoms combine
Down
- 1. Atoms combined
- 2. Not chemically combined
- 3. Study of matter
- 4. Building block
- 5. Occupied by matter
- 9. Amount of transfer
- 10. Present at the start
- 12. Elements combined
- 16. Heat transferring